Mechanical Forces
What is Mechanics?
Study of motion
What are the two simple machines that all machines are based?
Lever and Inclined Plane
What is kinematics?
It is the study of how things move
What is inertia?
An object's tendency to stay in the present condition it is in
Define Cycle
One complete movement
What is energy?
The ability to perform work
How do you pay for mechanical advantage?
In distance
What is frame of reference?
The point of view from which something is being observed
What is the 1st law of motion?
Objects at rest will stay in rest, and objects in motion will stay in motion unless acted upon by an outside force
Define Oscillation
Movement between two points
What is momentum?
movement in a particular direction
What are the parts of the lever? Describe them
Effort Arm: Solid bar
Resistance: weight
Effort: force applied
Fulcrum: Point on which the effort arm rotates
What is relative motion?
Motion of an object with respect to another
What is the 2nd law of motion?
F=ma
The net force required to move an object is equal to its mass multiplied by its acceleration
Define Mean Position
The position about which the oscillation occurs
What is tension?
A continuous pull on an object
What is a gear?
It is a wheel with teeth
What is speed?
The rate at which something changes position with respect to something else
What is the 3rd law of motion?
For every action, there is an equal and opposite reaction
Define amplitude
What is friction
It is the force that resists movement
What is a wedge?
It is two inclined planes placed bottom to bottom to form a point
What causes an object to decelerate?
When a force is applied in the opposite direction
What is the law of gravity?
Two bodies attract each other with a force proportional to the product of their masses and inversely proportional to the square of the distance between them
Define damping
Process that causes oscillations to die down